Obama: Russia responsible for Ukraine violence
President rules out US military action, but says Moscow's actions will bring 'more costs and consequences' for Russia.
Speaking at a news conference in Washington, the US president said Russia was encouraging, training, arming and funding separatists in the region and warned Moscow that it faced further isolation.
He said: "Russia has deliberately and repeatedly violated the sovereignty and territorial integrity of Ukraine and the new images of Russian forces inside Ukraine make that plain for the world to see. This comes as Ukrainian forces are making progress against the separatists."
Obama again ruled out US military action, but claimed Russia's increasing involvement in Ukraine "will only bring more costs and consequences for Russia", threatening a further tightening of sanctions.
http://www.theguardian.com/world/2014/aug/29/obama-russia-troops-ukraine